WO2015130302A1 - Procédé amélioré pour l'application d'un emplâtre de réparation de pneumatiques - Google Patents

Procédé amélioré pour l'application d'un emplâtre de réparation de pneumatiques Download PDF

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Publication number
WO2015130302A1
WO2015130302A1 PCT/US2014/019312 US2014019312W WO2015130302A1 WO 2015130302 A1 WO2015130302 A1 WO 2015130302A1 US 2014019312 W US2014019312 W US 2014019312W WO 2015130302 A1 WO2015130302 A1 WO 2015130302A1
Authority
WO
WIPO (PCT)
Prior art keywords
tire
damaged portion
patch
applying
opening
Prior art date
Application number
PCT/US2014/019312
Other languages
English (en)
Inventor
E. Bruce Colby
Cesar E. ZARAK
Michael WIDMYER
Glenn Andrew GORDON
Original Assignee
Compagnie Generale Des Etablissements Michelin
Michelin Recherche Et Technique, S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie Generale Des Etablissements Michelin, Michelin Recherche Et Technique, S.A. filed Critical Compagnie Generale Des Etablissements Michelin
Priority to PCT/US2014/019312 priority Critical patent/WO2015130302A1/fr
Publication of WO2015130302A1 publication Critical patent/WO2015130302A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/24—Apparatus or accessories not otherwise provided for
    • B29C73/26—Apparatus or accessories not otherwise provided for for mechanical pretreatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/04—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using preformed elements
    • B29C73/10—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using preformed elements using patches sealing on the surface of the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/24—Apparatus or accessories not otherwise provided for
    • B29C73/26—Apparatus or accessories not otherwise provided for for mechanical pretreatment
    • B29C2073/262—Apparatus or accessories not otherwise provided for for mechanical pretreatment for polishing, roughening, buffing or sanding the area to be repaired
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof

Definitions

  • the subject matter of the present disclosure relates generally to the application of a tire repair patch.
  • Tires can be damaged during use from impact or collision with e.g., objects in the roadway.
  • the impact may be severe enough to puncture the tire and create an opening in the inner liner leading to a loss of gas (e.g., air) needed for proper inflation pressure.
  • the damage may not immediately create a loss of inflation pressure but may still cause damage requiring a repair that includes the inner liner.
  • the damage to a tire may be repairable.
  • Repair of the inner liner typically includes the application of a patch in a process that involves the use of cement.
  • the cement is applied to a repair surface that is specifically prepared for application of the patch.
  • the use of cement lengthens the time required for tire repair because of the additional time needed to allow drying of the cement. For example, depending on the cement composition, 10 to 15 minutes or more may be required for cement drying.
  • the cement will typically include VOCs or volatile organic compounds. For this reason, such tire repairs must typically be performed under a hood or other area where proper ventilation is provided. Provision must be made for storage of the cement, which may be significant in a commercial facility where multiple tire repairs are made daily such as e.g., a facility where tire retreading is performed.
  • Tire repair is very often coupled with tire retreading.
  • One difficulty in removing the cement from the repair process is that retreading involves an inflation step, after the repair has been made, and before the tire is submitted to curing in autoclave.
  • the cement provides tack needed to hold the patch in place during the retreading process. So, any attempt to eliminate cement generally must replace much of this tack.
  • the present invention provides an improved method for application of a tire repair patch.
  • the use of cement for the application of the patch can be eliminated so as to avoid delays necessitated by drying time and the release of VOCs.
  • cement can be pre-applied separately to the patch to avoid delay in drying time and to facilitate the confinement of VOCs released during drying. Additional objects and advantages of the invention will be set forth in part in the following description, or may be apparent from the description, or may be learned through practice of the invention.
  • a method of applying a repair patch to a damaged portion of a tire includes the steps of applying cement to a bonding surface of the patch before application of the patch to the tire; drying the cement dry substantially before application of the patch to the tire; preparing the surrounding surface of the damaged portion of the tire for application of the patch; pressing the patch onto the damaged portion of the tire; and curing at least part of the damaged portion of the tire.
  • the present invention provides a cementless method of applying a repair patch to a damaged portion of a tire.
  • This exemplary method includes the steps of locating the damaged portion of the tire; grinding a surrounding surface of the damaged portion of the tire for application of the patch; repeatedly contacting and removing bonding compound over the surface created by the grinding step in a manner that removes residue from the surface for bonding with the repair patch; pressing the patch onto the damaged portion of the tire in a manner that contacts the patch with the surface treated by the grinding step and positions the patch over the damaged portion without the use of cement; and curing at least part of the damaged portion of the tire.
  • a cementless method of applying a repair patch to a damaged portion of a tire includes the steps of locating the damaged portion of the tire; preparing the surrounding surface of the damaged portion for application of the patch, the step of preparing including creating an opening at the damaged portion of the tire for receipt of the patch; positioning bonding rubber onto the tire in a manner that completely surrounds the opening created at the damaged portion; pressing the patch onto the damaged portion of the tire in a manner that contacts the bonding layer of the patch with the added bonding rubber bonding rubber and positions the patch over the opening without the use of a cement; and curing at least part of the damaged portion of the tire.
  • a cementless method of applying a repair patch to a damaged portion of a tire includes the steps of locating the damaged portion of the tire; grinding a surface surrounding the damaged portion of the tire for application of the patch; refreshing the surface treated by the grinding step with a mild abrasive; pressing the patch onto the damaged portion of the tire in a manner that contacts the patch with the surface treated by the refreshing step and positions the patch over the damaged portion without the use of a cement; and curing at least part of the damaged portion of the tire.
  • a cementless method of applying a repair patch to a damaged portion of a tire includes the steps of locating the damaged portion of the tire; preparing the surrounding surface area of the damaged portion for application of the patch, the step of preparing including creating a suitable surface at the damaged portion of the tire for receipt of the patch; heating the patch, including a bonding layer, so as to soften the bonding layer; pressing the patch onto the damaged portion of the tire in a manner that positions the patch over the opening without the use of a cement; and curing at least part of the damaged portion of the tire.
  • the present invention provides a cementless method of repairing a damaged portion of a tire.
  • This exemplary, cementless method includes the steps of locating the damaged portion of the tire; preparing the surrounding surface of the damaged portion for application of a patch that comprises a cloth separator and a layer of cured rubber material, the step of preparing including creating a suitable surface at the damaged portion of the tire for receipt of the patch; positioning a layer of uncured bonding rubber onto the tire in a manner that covers and surrounds the opening created at the damaged portion; removing the cloth separator from the layer of cured rubber material of the patch; pressing the patch onto the damaged portion of the tire in a manner that contacts the patch with the uncured bonding rubber and positions the patch over the opening without the use of a cement, wherein the step of pressing occurs immediately after the step of removing; and curing at least part of the damaged portion of the tire.
  • FIG. 1 provides a perspective view of a portion of an exemplary tire including a partial cross-section through a meridian plane. A damaged portion of the tire is also shown.
  • FIG. 2 is a perspective view of the portion of the exemplary tire shown in FIG. 1 with an exemplary opening created in the damaged portion of the tire in preparation for patch application.
  • FIG. 3 is a cross-section of the tire taken along line 3-3 of FIG. 2.
  • FIG. 4 illustrates the exemplary opening created in the tire of FIG. 2 as viewed from the interior of the tire.
  • FIG. 5 A perspective view of an exemplary patch as may be used with the present invention is shown in FIG. 5.
  • FIG. 6 is a perspective view of the steps of creating another exemplary patch as may be used with the present invention.
  • FIG. 1 provides a perspective view of a cross-section of a tire 100 having a damaged portion 102 along a sidewall 104.
  • the cross-section is taken along a meridian plane of tire 100.
  • Tire 100 includes a sidewall 102 that extends between a bead portion 106 and a crown portion 108, which includes a tread portion 110.
  • a body ply 116 extends from bead portion 106 through sidewall 104 and crown portion 108.
  • Tire 100 includes an inner liner 112 along the interior 114 of tire 100, which serves to maintain inflation pressure.
  • Damaged portion 102 may include a tear, laceration, puncture, or other damage 98 to tire 100 caused by e.g., impact or collision with another object.
  • the size of the damaged portion 102 may differ from the example shown in FIG. 1 and/or may be located at other positions on tire 100.
  • the present invention may also be used to repair a tire for which the tread portion 110 has been removed as part of a retreading operation.
  • the damaged portion 102 of tire 100 may create an opening or leak in inner liner 112 that prevents tire 100 from holding inflation pressure.
  • the damaged portion 102 may include breaks or other damage to one or more cords 118 in body ply 116.
  • the repair of tire 100 includes locating the damaged portion 102 and then preparing it for application of the patch.
  • preparation may include cutting the rubber materials of tire 100, in this example sidewall 102, to create an opening 120 having a specific shape such as e.g., a polygon of length L and width W. Opening 120 may be, for example, large enough to remove damaged materials from portion 102 while small enough and of a proper shape for application of a patch (it being understood, however, that the shape of opening 120 and the patch may be different).
  • Such preparation may also include cutting one or more damaged cords 118.
  • opening 120 is created completely through tire 100 extending between the interior 114 and exterior 122 of tire 100.
  • preparation will also include removal of some of the inner liner 112 of tire 100 to create a prepared surface 124 for patch application.
  • prepared surface 124 forms part of the inner liner 112 located at damaged portion 102.
  • Surface 124 surrounds opening 120 and is immediately adjacent to opening 120 for this embodiment.
  • the removal of material can be performed by e.g., grinding, buffing, or other actions that can roughen the surrounding surface 124 and remove contaminants from surrounding surface 124.
  • the size of the surrounding surface 124 that is prepared corresponds to an area slightly larger than the size of the patch 126 that will be used for the repair.
  • An exemplary patch 126 is selected for application at a position over the opening 120 of inner liner 112.
  • Patch 126 is configured in a size and shape that will cover opening 120 and sufficiently contact surface 124.
  • Patch 126 may include multiple additional layers and have a shape different than what is shown in FIG. 5.
  • patch 126 includes a protective layer 128 placed onto bonding surface 130 of a bonding layer 132 constructed from uncured rubber.
  • a protective layer 128 placed onto bonding surface 130 of a bonding layer 132 constructed from uncured rubber.
  • patch 126 may be reinforced by e.g., one or more additional layers placed onto side 134 of bonding layer 132.
  • patch 126 may include one or more additional layers of cured rubber 144 and 148 that are positioned (arrow P) onto side 134 of the uncured rubber used for bonding layer 132.
  • Layers 144 and 148 have a protective cloth layer 142 on surface 146 opposite to surface 150.
  • Protective layer 142 is removed and then the conglomerate of cured layers 144 and 148 are positioned onto bonding layer 132 of patch 126.
  • Cloth layer 142 helps provide a clean, textured surface 146 for application to surface 134 and aids in removal from the molding surface.
  • cement is applied to the bonding surface 130 on layer 132 of patch 126.
  • the cement is allowed to dry substantially before application to tire 100. Because the cement is applied to patch 126, this exemplary step advantageously allows patch 126 to be prepared in advance of other steps in the repair patch application process. As such, the time required for drying of the cement can be can be easily masked, thereby shortening the time for patch application to a damaged tire.
  • patch 126 can be readily placed into a hood or other ventilated area prior to application to tire 100 so as to more effectively confine and exhaust VOCs and prevent their migration to the rest of a tire repair or retread facility.
  • patch 126 is pressed onto the damaged portion 102 of tire 100 with the cement on patch 126 contacting surface 124 around opening 120.
  • the freshness of the prepared surface 124 and the fresh cement layer on the patch provide sufficient tack and adhesion.
  • repair rubber may now be placed in the opening from the exterior side 122 of tire 100 to fill the opening against patch 126.
  • a new tread portion 110 may be placed on the tire 100, which is typically buffed in preparation for the new tread.
  • Tire 100 is then placed into an autoclave or other device where heat and pressure are applied. These conditions cure the damaged portion of tire 100 or, more particularly, the uncured rubber components of patch 126 and the repair rubber.
  • the new tread portion 110 will also be cured to the buffed tire.
  • the use of cement can be eliminated from the process of applying repair patch 126.
  • surface 124 is repeatedly contacted with a bonding compound.
  • the bonding compound may be a portion of uncured rubber that is specially formulated to adhere to surface 124 created by the grinding step.
  • the uncured rubber is repeatedly placed into contact with surface 124 and then removed from surface 124.
  • the tackiness of the bonding compound removes residue created during the grinding step and/or other contaminants that could interfere with proper bonding of patch 126.
  • it is believed such repeated contacting can help activate surface 124 to further enhance tack and bonding.
  • this step can be performed using a tack roller 136 (FIG. 3) that includes the bonding compound 138.
  • Tack roller 136 is moved repeatedly back and forth (arrows S) over surface 124.
  • patch 125 is pressed onto surface 124 of tire 100 (without the use of cement) and further steps may be completed (e.g., filling, retreading) as described above before placing tire 100 into an autoclave or other device where heat and pressure are applied.
  • a thin element of bonding rubber is positioned onto surface 124 surrounding the damaged portion. More particularly, after locating the damaged portion 102, creating opening 120, and preparing surface 124 by e.g., grinding, a thin element of an uncured, bonding rubber 140 is applied to surface 124 in a manner that provides a high tack bond that completely surrounds opening 120 as shown in FIG. 4. Preferably, bonding rubber 140 is applied to all of the prepared, surrounding surface 124. Bonding rubber 140 may be hot extruded or applied as a layer and stitched.
  • Protective layer 128 of patch 126 is then removed from the bonding layer 132 of uncured rubber 132, and then patch 126 is pressed to surface 124 and bonding rubber 140.
  • the presence of the extra layer of bonding rubber on the periphery of the damaged area sufficiently tacks the repair to the tire, seals any irregularities, blocks any air pathways, and prevents air from migrating from the inside of the tire through the injury during the inflation step of the retreading process. Further steps may be completed (e.g., filling, retreading) as described above before placing tire 100 into an autoclave or other device where heat and pressure are applied.
  • the prepared tire surface 124 is refreshed using a mildly abrasive cleaner.
  • a mildly abrasive cleaner For example, after locating the damaged portion 102, creating opening 120, and preparing surface 124 by e.g., grinding as described above, surface 124 is refreshed with a mild abrasive.
  • the mild abrasive could be ScotchbriteTM that is used to rub surface 124.
  • Such refreshment helps to remove residual debris from surface 124 and promotes better tack and adhesion with patch 126.
  • further steps may be completed (e.g., filling, retreading) as described above before placing tire 100 into an autoclave or other device where heat and pressure are applied.
  • patch 126 with bonding layer 132 is heated. More particularly, as set forth previously, the damaged portion 102 of tire 100 is located, opening 120 is created, and surface 124 is prepared as described above. Using a heat source such e.g., a hot pad or other device, bonding layer 132 of patch 126 is heated to so as to soften the bonding layer thereby increasing its tack and wetting capability. After pressing patch 126 onto the refreshed surface 124 without the use of cement, further steps may be completed (e.g., filling, retreading) as described above before placing tire 100 into an autoclave or other device where heat and pressure are applied.
  • a heat source such e.g., a hot pad or other device
  • an additional cementless method of repair of tire 100 is provided. After locating the damaged portion 102, it is prepared for application of the patch (e.g., creating a buffed surrounding surface 124 in the vicinity of the opening at the damaged portion of the tire). Then, a layer of uncured, bonding rubber 132 is positioned onto the tire in a manner that covers the prepared area 124 at damaged portion 102. Preferably, bonding rubber 132 is applied to all of the prepared, surrounding surface 124. Next, a cloth separator 142 or other protective layer is removed from one or more layers of cured rubber such as e.g., layers 144 and 148 as shown in FIG. 6.
  • the removal of the protective layer 142 is performed immediately prior to the application of layers 144 and 148 to tire 100 such that surface 146 is clean and sufficiently fresh for positioning onto layer 132.
  • the cured layers 144 and 148 are pressed onto the uncured layer of bonding rubber 132 so as to cover all of surface 134.
  • Tire 100 is then subjected to a curing step as previously described.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

L'invention concerne un procédé amélioré pour l'application d'un emplâtre de réparation de pneumatiques. L'utilisation de ciment pour l'application de l'emplâtre de réparation peut être éliminée de façon à éviter les retards exigés par le temps de séchage et la libération des COV. Ou bien encore, le ciment peut être pré-appliqué séparément sur l'emplâtre, pour éviter les retards dus au temps de séchage et pour faciliter le confinement des COV libérés pendant le séchage.
PCT/US2014/019312 2014-02-28 2014-02-28 Procédé amélioré pour l'application d'un emplâtre de réparation de pneumatiques WO2015130302A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2014/019312 WO2015130302A1 (fr) 2014-02-28 2014-02-28 Procédé amélioré pour l'application d'un emplâtre de réparation de pneumatiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2014/019312 WO2015130302A1 (fr) 2014-02-28 2014-02-28 Procédé amélioré pour l'application d'un emplâtre de réparation de pneumatiques

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WO2015130302A1 true WO2015130302A1 (fr) 2015-09-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111055518A (zh) * 2019-12-09 2020-04-24 中航复合材料有限责任公司 一种适用于真空袋压工艺的复合材料胶接修理方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US622436A (en) * 1899-04-04 James e
US3122951A (en) * 1964-03-03 Tire repair plug inserting apparatus
US4285382A (en) * 1980-07-10 1981-08-25 Dirocco Jobbie Tire repair patch
US4407220A (en) * 1981-05-14 1983-10-04 Fesmire Lloyd W Cement spraying machine for tires
US20110162772A1 (en) * 2008-09-10 2011-07-07 Michelin Recherche Et Technique S.A. Integrated reinforcement patch
US8657975B2 (en) * 2002-02-18 2014-02-25 Bridgestone Americas Tire Operations, Llc Tire and method of securing an object thereto

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US622436A (en) * 1899-04-04 James e
US3122951A (en) * 1964-03-03 Tire repair plug inserting apparatus
US4285382A (en) * 1980-07-10 1981-08-25 Dirocco Jobbie Tire repair patch
US4407220A (en) * 1981-05-14 1983-10-04 Fesmire Lloyd W Cement spraying machine for tires
US8657975B2 (en) * 2002-02-18 2014-02-25 Bridgestone Americas Tire Operations, Llc Tire and method of securing an object thereto
US20110162772A1 (en) * 2008-09-10 2011-07-07 Michelin Recherche Et Technique S.A. Integrated reinforcement patch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111055518A (zh) * 2019-12-09 2020-04-24 中航复合材料有限责任公司 一种适用于真空袋压工艺的复合材料胶接修理方法

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